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P0303 Diagnostic Trouble Code Discussion for October 2016

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2008 Honda Odyssey LX 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 5FNRL38228
P0303: Cylinder 3 misfire. This boomerang just keeps coming back. I initially replaced the fuel pump, due to a lack of power concern. It returned a month later with a check engine light. I rechecked the fuel pressure and it is in specs 58psi. It runs well but has a rough idle. I adjuste...
October 07, 2016
1997 Mercury Sable GS 3.0L Poor Idle Quality, MIL Lamp on VIN: 1MELM50U4V
P0303: Misfire cyl 3. For you short version guys, what are real fuel pressure specs for this car? Or read on, thanks. Mil on, lumpy idle after a long idle. First the upstream O2 sensors seem to be "going to sleep" after a long idle. Both read around 20mv, crack the idle and...
October 25, 2016
2003 Jeep Liberty Limited 3.7L Misfire, MIL Lamp on VIN: 1J4GL58K63
P0303: Cylinder 3 Misfire Detected. This is a new one for us. The customer came in requesting new spark plugs. we installed them and then she asked if the poor running was fixed. we noted no poor running on the post repair test drive so we cleared the codes and she took it. One week later she ca...
October 31, 2016